Tire-valve.



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itinerantes;

- -f---f lll'i". fpeeii'eution iai ietteisatent. l Pad-gmcmrggi yapplicaties inea necesitar 5, cenar no. @causa Toall whom it mayconcern.' .3, inner part of tlie nipple tub-e "s suitably A Be 1t knownthat I, ALBERT el; Sami/rau, .snaped to engage with the air tut To enacitizen of the United States, residing at Dorchester, in the countyy oiSuiolk. and State of Massachusetts, have invented new?- and usefulImprovements inTire-Valves, of which the followip is a specification.

My' invention re ates to improvements in pneumatic valves forVehicle'tires, and other purposes, in which the valve is containedWithin a nipple or tubesection Which is dis-I tinct and separable fromthe ordinary air tube, usually Xedly attached to the Vtire or to theinner tube of the tire; Wl'iereby such nipple, with the valve and itsrelated parts, may be removed from the lined air tube, for adjustment orrepairof the valve, Without the necessity of removing the inner tubefrom the Wheel or separatingtbe fixed air tube from the inner tire tube.C

ln order to. make the invention more clearly understood I have shown inthe accompanying drawings means for carrying the same into practicaleect, Without' liniit ing the improvements, in their usefulapplications, to the particular constructions which, for the purpose oiillustration, l have delineated.

ln the said drawings Figure Il is a side View of a pneumatic 'valveembodying my .irnprovementse the air tube of the tire being shown indotted lines. Fig. 2 is a vertical longitudinal section of the same.-Fig. 3 is a view part in side elevation and partly in section of theparts composing the pneumatic valve separated from each other ordisassembled. Fig. 4 is a cross-section on line VIhVl of Fig. 2. l

The dra-Wings show the parts enlarged to about twice the .natural size,for the purpose of `greater dstinctness.

Referring to tliesaid drawings, 1 indi cates the air tube of the tirewhich is, or may be, permanently attached to the tire. This tube may beof metal secured to the tire, or to the inner tube thereof, in a knownmanner; or it may be of rubber vulcanized to the tire.

2 is the nipple baring a middle enlarged portion 8 which is iiattened ornut-shaped soY that it may be turned by a Wrencli. The portion 3presents an inner shoulder fr to the end of the air tube and an outershoulder 5 to tbe inner endg@ the cap ilange. The

gage-a metal aintube it is 1 so as to engage frei/idea with wlgicn willenscrew thread as'sliown gane with a corresponding d tbe air tu e. Theouter part the i? pple tube is screwtlireaded eiiterioriy bou/'n at 'l'and interiorly as sbowniat te primed either oi the two usar-.l pump fcoupling. The nir e is formed inner extremity, er able point, Witb epart ci the nipJ .ed prevent the turning; of the, valve stein nut,hereinafter mentioned; an example of suon interior formation isillustrated, "which consists in a ...,.l squar ing oi the interior of'the tube as sli Wn at l0, leaving however an eiiicient extent of thescrew thread 8. I 11 is the Valvearranged to engage valve seat 9 andhaving a stein l2 which extends eutwardlyinto and nearly/through tbeouter" 'part of the nipple tub/e. 'iiis stein screw threaded as shown'i3 and engages a nui; 14: Within tbe nipple, which nut is lield fromturning' by tire rforina tion l0. Y

l5 is the cap which may be entirely' closed at its outer end, and isformed Wits a flange 16 which incluses the outer part oily nipple andabuts against shoulder The cap is further formed with a tube ll" Wbiciiis centrally arranged Within tbe @ange i6' and is adapted to enterWithin the nipple. llt is interiorly screw threaded to engage upon thevalve stein, so that, by screwing the cap inward the valve will oedran/'n forcibly upon its seatlQ. Packings of rubber or other suitablematerial be provided at all joints, ii desired. @ne such packing isshown at i8 between the Valve and its seat.

19 is a springr resting upon a shoulder-20 Within the inner end of thenipple and engaging the under side of the nut lei. This spring a'cts topress tbe valve, without too much force, against its seat. The valve maybe opened, after tlie removal oi. tlie cap l5,

by pressing inward upon tbe outer end of the valve stem tliereb germitins* tlie'ei;N

liaust oi air 'from 'the tire.

2l is a stop which is or may be employed to regulate the distance toWliicli tbe valibe stem is screwed into the nut le. it is preferablyformed on the valve stern as shown.

y 'When the stem'is. screwed suiciently into the nut, to give' thespring;- that tension which hoidg the valve properly on its Seat, thestop 2l comes in contact with the under side ot the nut and the parteare hohl in the desired relative position.

The entire device, as a unitary article, may be attached to the airtube, or removed therefrom for repair or renewal of the valve. The cap15 may have an openihe 2'( for the escape of air, to allow which the capis screwed a little way outward on the valve stem and then pressedinward to'release the valve from its seat. The stem 12 is not fittedlair-tight in the surrounding part 17, so that the air can escape asdescribed.

1. In a` valve for tiresa the combination of a nipple adapted to beattached to a tire air tube the Said nipple being provided with a valveseat and a springsupporting shoulder7 a valve having a screw threadedstem, a cap engagin such stem to draw the valve to its' a nut on saidstein and Within the seat, an nipple for holding the spring under thedey sired tension, the nipple having its interior squared for reventingthe rotation of the nut, substantially as set Jforth.

2. n av valve for tires, the combination of a. nipple adapted to beattached to a tire air tube the said nipple being provided with a valveseat anda spring-supporting shonlder a valve having a screw threadedstem, a cap engaging such stern to draw the valve to its seat, a nut onsaid stem for holding the spring under the desired tension. and a stopQi on the valve stem and projecting outward therefrom for limiting thedistance to which the stein niav be screwed in to the nut,

thereby limiting the teneion of the Spring, substantially as set forth.

3. In a valve for tirc. lhc combination oi a nipple adapted to beattached to a tire air tube, the `said nipple being' provided with avalve seat and a Spring supporting shoulder, a valve hai ingl a screwthreaded stem, a can engaging such dem to draw the valve to its seat, anut on said stem and Within the nipple for holdingl the :Spring underthe desired tension, and a positive stop on the valve stein for limitingthe longitudinai movement ot the nut on the valve Stern, the nipplehaving independently of the cap means 'for preventing the rotation ofthe nut. substantially a? set forth.

ln testimony whereof' I have hereunto my hand in presence of twoSubscribing Witnesses.

ALBERT J. SFJMAN.

Witnesses Trios. P. Bomena Jrnmiian S. SULLWAN.

